Wu Long didn't make the offer to Chen Hui lightly, and it wasn't all that charitable of him either, even if he did take helping the Imperial Guard into consideration.
From the reports he received a bit earlier, he confirmed that the ages of the older two princes were both at 19, the same as the 5th prince. The difference was only in months they were born in.
He also got at least some of an understanding of each of the 3 other princes vying for throne, not only from reports, but from his interaction with the 9th prince who threw out valuable information like it was pebbles.
And the situation did not look too good.
Of course, he could not be certain, and even the vague estimations could be off since he did not meet the other three in person, but it did seem like there was no suitable person to have dealings with among the princes.
